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Finding the Fourth Proportional to 202,135.80, 303,203.70 and 143,086.80

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Solution

The fourth proportional to 202,135.80, 303,203.70 and 143,086.80 is: 214,630.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,135.80 : 303,203.70 = 143,086.80 : x
  2. Step 2: Convert to fraction form
    202,135.80/303,203.70 = 143,086.80/x
  3. Step 3: Cross multiply
    202,135.80x = 303,203.70 × 143,086.80
  4. Step 4: Simplify right side
    202,135.80x = 43,384,447,181.16
  5. Step 5: Solve for x
    x = 43,384,447,181.16/202,135.80
  6. Step 6: Final answer
    x = 214,630.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.